adenoidal vs adenoid

adenoidal is not a noun while adenoid is a noun.

Word	Noun	Adjective	Verb	Adverb
adenoidal	No	Yes	No	No
adenoid	Yes	Yes	No	No

adenoidal (noun)	adenoid (noun)
	a collection of lymphatic tissue in the throat behind the uvula (on the posterior wall and roof of the nasopharynx)

adenoidal (adjective)	adenoid (adjective)
of or pertaining to the adenoids	relating to or resembling lymphatic glands or lymphoid tissue
sounding as if the nose were pinched